Synchronous telecommunications system with unique indentification of paths

Abstract

PCT No. PCT/GB95/00014 Sec. 371 Date Jul. 23, 1996 Sec. 102(e) Date Jul. 23, 1996 PCT Filed Jan. 5, 1995 PCT Pub. No. WO95/19082 PCT Pub. Date Jul. 13, 1995In a digital telecommunication system having data packages carrying identification data, the identification data is characterized in that it is unique to the package within a station and does not depend on the identity of the originating station.

I claim: 
     
       1. A digital telecommunications system, comprising: at least one add-drop multiplexer (ADMUX); one or more paths passing through one or more of said at least one ADMUX for the communication of data traffic therethrough; said at least one ADMUX being arranged to generate an identification number for uniquely identifying each of said one or more paths passing through that ADMUX, said data traffic comprising overhead; said ADMUX also including means for substituting said identification number for a part of said overhead as said data traffic enters said ADMUX; and means for resubstituting said part of said overhead for said identification number as said data traffic leaves said ADMUX, said part of said overhead which is substituted and resubstituted forming a part of a section overhead. 
     
     
       2. The digital telecommunications system of claim 1, in which said identification number uniquely identifies within said at least one ADMUX a particular one of said paths passing through that ADMUX.